Plant-Derived Aerosol-Smoke and Smoke Solutions Influence Agronomic Performance of a Traditional Cereal Crop, Tef (original) (raw)
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Aerosol Smoke and Smoke-Water Stimulation of Seedling Vigor of a Commercial Maize Cultivar
Crop Science, 2006
The effect of smoke as a germination cue is well documented. Recent developments in smoke technology have suggested that smoke also improves vigor. It has been reported that indigenous storage methods of South African maize landraces using smoke enhances seedling vigor. This present study highlights the effects of aerosol smoke and smoke-water on the germination and seedling vigor of a commercial maize cultivar, Zea mays L. var. PAN 6479. Various presoaking and smoking combinations were investigated. Treating seeds with aerosol smoke showed significant (p , 0.05) stimulatory effects on vigor. However, prolonged exposure to aerosol smoke resulted in reduced germination which was alleviated by rinsing the seeds. Furthermore, presoaking seeds before exposure to aerosol smoke also significantly (p , 0.05) reduced the inhibitory effect of prolonged smoking. The combination of presoaking and smoking had a significant (p , 0.05) improvement on the percentage germination. This study also showed that smoke has the potential to improve not only the percentage germination but also seedling vigor of commercially bred maize seeds.
Smoke-Water Enhances Germination and Seedling Growth of Four Horticultural Crops
Plants, 2019
The impact of plant-derived smoke as a promoter of seed germination in many crops is well documented. However, very little is known about (1) the appropriate plant species for smoke-water preparation, (2) the effect of smoke-water on the germination and the post-germination parameters in non-fire-prone environments, and (3) the relative importance of dark and light conditions and their possible effects. To fill these gaps in knowledge, we conducted field experiments to evaluate the effect of smoke-water produced from five plant species—white willow, sage, rice straw, rosemary, and lemon eucalyptus—on the germination and seedling growth of cucumber, tomato, scotch marigold, and gladiolus. The seeds and cormels were soaked in smoke-water under light or dark conditions. The results revealed that the smoke-water treatments derived from white willow and lemon eucalyptus enhanced germination, post-germination parameters, and macro element content whilst also contributing to dormancy-break...
American Journal of Plant Sciences, 2016
Smoke produced from burning of plant material elicits a striking increase in seed germination in various plant species. In present work, effect of plant derived smoke exposure on wheat (Triticum aestivum L.) seeds germination and post germination response has been studied in laboratory. Plant derived smoke was generated by burning of plant material (leaf, straws etc.) in a special designed furnace. Non-imbibed and imbibed seeds of wheat were exposed to plant derived smoke for 1 hr time duration. Best results were observed in non-imbibed seeds treated with plant derived smoke while imbibed seeds showed poor response to germination percentage, germination index, seedling vigor index and root shoot length. It has been proved from present study that plant derived smoke has stimulatory effect on germination & post germination response of non-imbibed seeds while it may cause inhibitory effect in imbibed seeds of wheat.
Smoke produced from burning of plant material elicits a striking increase in seed germination in various plant species. In present work, effect of plant derived smoke exposure on wheat (Triticum aestivum L.) seeds germination and post germination response has been studied in laboratory. Plant derived smoke was generated by burning of plant material (leaf, straws etc.) in a special designed furnace. Non-imbibed and imbibed seeds of wheat were exposed to plant derived smoke for 1 hr time duration. Best results were observed in non-imbibed seeds treated with plant derived smoke while imbibed seeds showed poor response to germination percentage, germination index, seedling vigor index and root shoot length. It has been proved from present study that plant derived smoke has stimulatory effect on germination & post germination response of non-imbibed seeds while it may cause inhibitory effect in imbibed seeds of wheat.
South African Journal of Botany, 2004
The promotion of germination of certain seeds by plantderived smoke and aqueous smoke solutions is well known. Different batches of smoke solutions can differ in the concentration of active compounds. In this study, the germination of Grand Rapids lettuce seed was used as a bioassay to demonstrate, and assess the differences between five types of smoke solutions. Germination was done in a controlled environment, using novel 'through-flow germination boxes', instead of traditional petri dishes. The optimum dilution levels of the smoke solutions were determined by comparing them to a standard smoke solution. Each of the smoke solutions tested was related numerically to the standard solution, this being given a value of 1. A numerical value is used to indicate the concentration level of each smoke solution. The five smoke solutions tested differed markedly from each other in their effect on the germination of the lettuce seed, emphasising the need for quality control in the production of aqueous smoke solution for commercial and experimental applications, as in field restoration programmes.
Plant-Derived Smoke Affects Biochemical Mechanism on Plant Growth and Seed Germination
International Journal of Molecular Sciences
The role of plant-derived smoke, which is changed in mineral-nutrient status, in enhancing germination and post-germination was effectively established. The majority of plant species positively respond to plant-derived smoke in the enhancement of seed germination and plant growth. The stimulatory effect of plant-derived smoke on normally growing and stressed plants may help to reduce economic and human resources, which validates its candidature as a biostimulant. Plant-derived smoke potentially facilitates the early harvest and increases crop productivity. Karrikins and cyanohydrin are the active compound in plant-derived smoke. In this review, data from the latest research explaining the effect of plant-derived smoke on morphological, physiological, biochemical, and molecular responses of plants are presented. The pathway for reception and interaction of compounds of plant-derived smoke at the cellular and molecular level of plant is described and discussed.
Biotechnology reports (Amsterdam, Netherlands), 2018
The experimental work presented in this study was carried out with the hypothesis that plant derived smoke enhanced the morphological, physiological and biochemical attributes of a cereal crop, wheat (Triticum aestivum L.). Furthermore, this study supported the hypothesis that plant derived smoke acts as vegetative growth promoter, inexpensive, rapid and most appropriate eco-friendly bio-fertilizer for sustainable agriculture. Plant derived smoke was generated by burning of plant material (leaf, straws etc) in a specially designed furnace, and seeds were treated with this smoke for different time duration. Four level of plant derived smoke (1 h, 2 h, 3 h and 4 h) along with control were tested on four wheat cultivars in CRD repeated pot experiment. The smoke-related treatments modified number of morphological, physiological and biochemical features of wheat. Compared with the control, aerosol smoke treatment of the seeds significantly improved root length (2.6%), shoot length (7.7%)...
South African Journal of Botany, 2011
Fire and smoke have been used in traditional agricultural systems for centuries. In recent years, biologically active compounds have been isolated from smoke with potential uses in agriculture and horticulture. This article highlights the possibilities of using smoke-water or smoke-derived butenolide (3-methyl-2H-furo[2,3-c]pyran-2-one, termed karrikinolide, KAR 1) for the cultivation of agricultural and horticultural crops. Treatments with smoke-water show promising results for improving seed germination, seedling growth and crop productivity. In certain cases, even under adverse conditions, such as low or high temperatures and low osmotic potentials, smoke-water or a KAR 1 solution can promote seed germination and seedling growth. This phenomenon is of great significance when seeds are sown under drought conditions. Smoke-technology, therefore, has potential for use in arid and semi-arid regions. Possibilities may also exist for controlling some plant diseases and managing weeds with the use of smoke or KAR 1 solutions. In addition, smoke-technology can possibly economize the use of commercial chemical fertilizers, pesticides and herbicides, making it a feasible technology for organic farming and for resource-poor farmers in developing nations. The positive role of smoke-water in flowering and fruiting of crops cannot be overlooked as the karrikins found in smoke are now recognized as potential new plant growth regulators. Very low concentrations of smoke-water or a KAR 1 solution are effective in promoting germination and post-germination growth. Thus, early harvesting and increasing the productivity of crops using smoke-technology may be possible. Here we review some of the effects of smoke and KAR 1 on various crop species and discuss the potential uses of smoke technology in agriculture and horticulture.
THE IMPACT OF PLANT-DERIVED SMOKE ON SEED GERMINATION IN THE CONTEXT OF SWAILING
Smoke generated by wildfires have special ecological impact in various fire-prone environment in Africa, Australia, and both Americas. However, in the countries of moderate climate zones, swailing (controlled burning of meadows) is often, although illegally, practiced by farmers. Hence, the influence of smoke generated from plant debris on seed germination and radicle growth of 4 crops, popularly grown and 3 weed species, occurring in Central Europe was studied. Smoke had stimulative effect on seeds germination of 6 from 7 studied species. There was no impact on germination of meadow cress seeds, but in this case strong stimulation of radicle growth was noticed. The influence of smoke on germination was the strongest in case of red cabbage, as the difference between smoke-treated and control seeds was 60%, and the stimulation of growth of radicles was obtained. Summing up, plant-derived smoke can stimulate seed germination and seedling vigour of some crop and weed plants of moderate...
The seeds of Eragrostis tef are often exposed to high temperatures and low water availability during unfavourable climatic conditions. This affects germination and seedling stand establishment of the crop. Smoke is currently widely studied for its stimulatory role in seed germination. The effect of smoke-water and a smoke-isolated butenolide was investigated on E. tef seed germination and seedling growth at different temperatures, light conditions and osmotic potentials. Treating E. tef seeds with smoke-water and butenolide increased the percentage germination relative to the control at all tested temperatures. These treatments significantly improved seedling length and the vigour index at 25, 30, 35 and 40 and 30/15 C. Smoke-water and butenolide increased percentage imbibition from high to low osmotic potential. In comparison with the control, smoke-water- and butenolide-treated seeds of E. tef showed higher percentage germination with decreasing osmotic potential. Smoke-water treatment exhibited significantly longer and more vigorous seedlings than the control between 0 and )0.30 MPa osmotic potential. The findings of this study suggest the possibility of using smoke treatments for minimizing E. tef seedling losses at elevated temperatures and water stress.